I vote for Donkey Kong Country. It was the most impressive at the time.
Terranigma was also quite the pretty game. I was really impressed by the cutscenes, backgrounds and especially the overworld back then. (man I feel old...)
Platforms: Wii U, New 3DS, PS4, PC
currently playing:
-Yoshi's Wooly World
-Pokemon X
-Fire Emblem Fates
Zone: Europe (Germany)